MQ-9 Flammable Gas Sensor Module – CO + CH4 + LPG
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MQ-9 Flammable Gas Sensor Module for Industrial Detection
Upgrade your gas detection capabilities with the MQ-9 Flammable Gas Sensor Module designed for precise flammable gas detection in industrial settings. Operating at DC 5V with 150 mA, this sensor provides TTL digital output and an AO output of 0.1-0.3V.
The MQ-9 sensor utilizes tin dioxide (SnO2) for enhanced conductivity and employs low-temperature cycling for accurate carbon monoxide detection. With high sensitivity to carbon monoxide (CO), methane (CH4), and liquefied petroleum gas (LPG), this cost-effective sensor is ideal for various industrial applications requiring reliable gas detection for safety and efficiency.
Typical Applications
- Industrial CO alarm — early-warning for CO in workshops / industrial sites.
- Natural gas leak detection — methane sensing for facility infrastructure.
- LPG storage monitoring — propane / butane leak detection.
- Mining facility safety — flammable gas accumulation monitoring.
MQ-9 Specifications
| Feature | Specification |
|---|---|
| Input Voltage | DC 5V |
| Power Consumption | 150 mA |
| Digital Output (DO) | TTL (0 / 1 = 0.1V / 5V) |
| Analog Output (AO) | 0.1 – 0.3V relative to concentration |
| Sensing Element | SnO2 (tin dioxide) |
| Detection | CO + Methane (CH4) + LPG |
| Heating Mode | Low-temperature cycling for CO |
| Condition | Brand New |
FAQ — MQ-9 Flammable Gas Sensor
Q: MQ-9 vs MQ-2 vs MQ-7 — different gases?
A: MQ-2 = multi-gas (LPG / smoke / methane). MQ-7 = CO-specific. MQ-9 = CO + methane + LPG combined. Pick by target gas mix.
Q: Burn-in needed?
A: Yes — 24h initial burn-in for stability.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.
Related products
- MQ-2 Multi-Gas Sensor Module
- MQ-7 CO Gas Sensor Module
- MQ-8 Hydrogen Gas Sensor
- MQ-3 Alcohol Sensor Module
OEMs / kit makers stocking MQ-9? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
